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- W2184281799 abstract "A new integrated bench-scale facility consisting of a plasma calciner (PC), a submerged plasma melter (SPM) and a cold crucible (CC) has been designed and constructed at SIA Radon. Combined PC/SPM and PC/CC units are perspective for melting/vitrification of liquid radioactive wastes (LRW) whereas the SPM is a promising unit for treatment of solid radioactive wastes (SRW). Plasma calciner is a shaft-type reactor for spray dehydration, denitration , and calcining of LRW with a salt concentration of up to 400 g/L in a single unit using impinging streams of high-temperature gases generated by two plasma torches and off-gas heat. Calculated LRW capacity of this unit is of 15 to 30 L/hr. Efficiency of the reactor is estimated to be ~70%. This reactor may be recommended as a preliminary stage of LRW vitrification in SPM or CC. The SPM process is based on bubbling of gas heated by plasma torches through melt (submerged combustion/melting). The “dog-house” melter has been designed and constructed. The melter consists of a case forming a melt bath, a batch feeder, a melt pouring unit, a melter cover, a melt collector with a sealing unit, a melter rake frame, and an off-gas umbrella. The melter is equipped with an off-gas system. Calculated melt productivity is up to 10 kg/hr. Calculated melter efficiency ranges between 30% and 47% depending on water content in the feed. Calculated energy expenses ranges between 0.85 and 3.5 kW per 1 kg of melt produced. The melter is equipped with an arc plasma torch having a thermocathode. This facility will be used for testing and trial of perspective waste treatment technologies to be implemented at industrial scale." @default.
- W2184281799 created "2016-06-24" @default.
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- W2184281799 date "2010-01-01" @default.
- W2184281799 modified "2023-09-27" @default.
- W2184281799 title "Design and Construction of Integrated System of Bench-Scale High-Temperature Waste Melting/Vitrification Units at SIA Radon - 10141" @default.
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